Corysanthes autumnalis

Corysanthes autumnalis (A.P.Br. & D.Edmonds) D.L.Jones

Corybas autumnalis; Corybas sp. 'peat swamps'

Peat Helmet Orchid

Andrew Brown & D.Edmonds in The Orchadian 19(9): 392-393 (2019) as Corybas autumnalis

North of Walpole, growing in peaty soils in seasonally damp flats.

· · · Apr May Jun · · · · · ·

An early flowering species 12–15 mm high (when flowering) with a smooth, rounded, ground-hugging leaf 5–8 mm long by 5–8 mm wide at the time of flowering, increasing to 9–12 mm long by 9–12 mm wide at maturity and a single creamy-white to pinkish-maroon flower 8–10 mm across.

It is distinguished from the other Western Australian Corysanthes species by its earlier flowering period, small leaf which is often hidden by the flower and distinctive labellum boss with a prominent raised circular ridge.

Priority Two